Optic for a firearm



FIG. 1 is a perspective view of the optic for a firearm showing our new design;

FIG. 2 is a perspective view thereof;

FIG. 3 is a perspective view thereof;

FIG. 4 is a perspective view thereof;

FIG. 5 is a front view thereof;

FIG. 6 is a rear view thereof;

FIG. 7 is a right side view thereof;

FIG. 8 is a left side view thereof;

FIG. 9 is a top view thereof; and,

FIG. 10 is a bottom view thereof.

The broken lines illustrate portions of the optic for a firearm that form no part of the claimed design. 

CLAIM The ornamental design for an optic for a firearm, as shown and described. 